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http://dx.doi.org/10.11568/kjm.2016.24.4.723

BOUNDEDNESS IN NONLINEAR PERTURBED DIFFERENTIAL SYSTEMS VIA t-SIMILARITY  

Im, Dong Man (Department of Mathematics Education Cheongju University)
Goo, Yoon Hoe (Department of Mathematics Hanseo University)
Publication Information
Korean Journal of Mathematics / v.24, no.4, 2016 , pp. 723-736 More about this Journal
Abstract
This paper shows that the solutions to nonlinear perturbed differential system $$y^{\prime}= f(t,y)+{\int_{t_{0}}^{t}g(s,y(s))ds+h(t,y(t),Ty(t))$$ have bounded properties. To show the bounded properties, we impose conditions on the perturbed part ${\int_{t_{0}}^{t}g(s,y(s))ds,\;h(t, y(t),\;Ty(t))$, and on the fundamental matrix of the unperturbed system y' = f(t, y) using the notion of h-stability.
Keywords
h-stability; $t_{\infty}$-similarity; bounded; nonlinear nonautonomous system;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 V. M. Alekseev, An estimate for the perturbations of the solutions of ordinary differential equations, Vestn. Mosk. Univ. Ser. I. Math. Mekh. 2 (1961), 28-36(Russian).
2 F. Brauer, Perturbations of nonlinear systems of differential equations, J. Math. Anal. Appl. 14 (1966), 198-206.   DOI
3 S. I. Choi and Y. H. Goo, h-stability and boundedness in perturbed functional differential systems, Far East J. Math. Sci(FJMS) 97(2015), 69-93.   DOI
4 S. I. Choi and Y . H. Goo, Boundedness in perturbed functional differential systems via $t_{\infty}$-similarity, Korean J. Math. 23 (2015), 269-282.   DOI
5 S. K. Choi and H. S. Ryu, h-stability in differential systems, Bull. Inst. Math. Acad. Sinica 21 (1993), 245-262.
6 S. K. Choi, N. J. Koo and H.S. Ryu, h-stability of differential systems via $t_{\infty}$-similarity, Bull. Korean. Math. Soc. 34 (1997), 371-383.
7 R. Conti, Sulla $t_{\infty}$-similitudine tra matricie l'equivalenza asintotica dei sistemi differenziali lineari, Rivista di Mat. Univ. Parma 8 (1957), 43-47.
8 Y. H. Goo, Boundedness in the perturbed functional differential systems via $t_{\infty}$-similarity, Far East J. Math. Sci(FJMS) 97(2015),763-780.   DOI
9 Y. H. Goo, Boundedness in the perturbed nonlinear differential systems, Far East J. Math. Sci(FJMS) 79(2013),205-217.
10 Y . H. Goo, Boundedness in the perturbed differential systems, J. Korean Soc. Math. Edu. Ser.B: Pure Appl. Math. 20 (2013), 223-232.
11 Y. H. Goo, Boundedness in perturbed nonlinear differential systems, J. Chungcheong Math. Soc. 26(2013), 605-613.   DOI
12 G. A. Hewer, Stability properties of the equation by $t_{\infty}$-similarity, J. Math. Anal. Appl. 41 (1973), 336-344.   DOI
13 V. Lakshmikantham and S. Leela, Differential and Integral Inequalities: Theory and Applications, Academic Press, New York and London, 1969.
14 B.G. Pachpatte, On some retarded inequalities and applications, J. Ineq. Pure Appl. Math. 3 (2002) 1-7.
15 M. Pinto, Perturbations of asymptotically stable differential systems, Analysis 4 (1984), 161-175.
16 M. Pinto, Stability of nonlinear differential systems, Applicable Analysis 43 (1992), 1-20.   DOI